Scott Haddow, CEO at Trustmarque, said in a canned statement that it can add "scale, capabilities and resources" to the relatively small operations at Opin.

Opin founder and MD Graham Curran and his small band of consultants will join Trustmarque. Curran will lead the Opin division.

For the year to 30 June 2012, as an SME Opin was allowed to file abbreviated accounts that showed the business had net assets of £776k.

In the year to 31 August 2012, Trustmarque made a gross profit of £15.9m, up 15 per cent year-on-year, and services and solutions represented some £7.1m of this. Turnover was £131.3m, up 14 per cent, and net profit came in at £3.82m, versus £3.39m. ®